All Things Considered on KRVS

Weekdays 4:00-6:00 PM
  • Hosted by Robert Seigel & Melissa Block

Live news from National Public Radio.

Copyright 2015 NPR. To see more, visit http://www.npr.org/.

Copyright 2015 NPR. To see more, visit http://www.npr.org/.

Transcript

MELISSA BLOCK, HOST:

Copyright 2015 NPR. To see more, visit http://www.npr.org/.

Transcript

AUDIE CORNISH, HOST:

Copyright 2015 NPR. To see more, visit http://www.npr.org/.

Transcript

AUDIE CORNISH, HOST:

Lake Superior is the largest freshwater lake in the world, by surface area, and it has something the other Great Lakes do not: stable populations of mostly native fish species.

But scientists say a key fish in Superior's food web is now in trouble because of mild winters and an appetite for caviar in Europe.

There wasn't much demand for lake herring 10 years ago. It used to be fed to mink and used as fertilizer, according to Craig Hoopman, a commercial fisherman in Wisconsin who fishes around Lake Superior's Apostle Islands.

Pages